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https://www.readbyqxmd.com/read/27898722/suicide-among-young-people-and-adults-in-ireland-method-characteristics-toxicological-analysis-and-substance-abuse-histories-compared
#1
Ella Arensman, Marco Bennardi, Celine Larkin, Amanda Wall, Carmel McAuliffe, Jacklyn McCarthy, Eileen Williamson, Ivan J Perry
OBJECTIVE: Information on factors associated with suicide among young individuals in Ireland is limited. The aim of this study was to identify socio-demographic characteristics and circumstances of death associated with age among individuals who died by suicide. METHODS: The study examined 121 consecutive suicides (2007-2012) occurring in the southern eastern part of Ireland (Cork city and county). Data were obtained from coroners, family informants, and health care professionals...
2016: PloS One
https://www.readbyqxmd.com/read/27872687/determining-the-molecular-pathways-underlying-the-protective-effect-of-non-steroidal-anti-inflammatory-drugs-for-alzheimer-s-disease-a-bioinformatics-approach
#2
Alejo J Nevado-Holgado, Simon Lovestone
Alzheimer's disease (AD) represents a substantial unmet need, due to increasing prevalence in an ageing society and the absence of a disease modifying therapy. Epidemiological evidence shows a protective effect of non steroidal anti inflammatory (NSAID) drugs, and genome wide association studies (GWAS) show consistent linkage to inflammatory pathways; both observations suggesting anti-inflammatory compounds might be effective in AD therapy although clinical trials to date have not been positive. In this study, we use pathway enrichment and fuzzy logic to identify pathways (KEGG database) simultaneously affected in both AD and by NSAIDs (Sulindac, Piroxicam, Paracetamol, Naproxen, Nabumetone, Ketoprofen, Diclofenac and Aspirin)...
2017: Computational and Structural Biotechnology Journal
https://www.readbyqxmd.com/read/27793687/synthesis-characterization-and-in-vivo-evaluation-of-a-magnetic-cisplatin-delivery-nanosystem-based-on-pmaa-graft-peg-copolymers
#3
Efstathia Voulgari, Aristides Bakandritsos, Sotiris Galtsidis, Vassilis Zoumpourlis, Benjamin P Burke, Gonçalo S Clemente, Christopher Cawthorne, Stephen J Archibald, Jiři Tuček, Radek Zbořil, Vasiliki Kantarelou, Andreas Germanos Karydas, Konstantinos Avgoustakis
The development of anticancer drug delivery systems which retain or enhance the cytotoxic properties of the drug to tumorous tissues, while reducing toxicity to other organs is of key importance. We investigated different poly(methacrylic acid)-g-poly(ethyleneglycol methacrylate) polymers as in situ coating agents for magnetite nanocrystallites. The obtained magnetic nano-assemblies were in turn thoroughly characterized for their structural, colloidal and physicochemical properties (drug loading capacity/release, magnetic field triggered drug release, cell uptake and localization) in order to select the best performing system...
October 26, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27756689/neuroadaptations-to-antipsychotic-drugs-insights-from-pre-clinical-and-human-post-mortem-studies
#4
Davide Amato, Clare L Beasley, Margaret K Hahn, Anthony C Vernon
Antipsychotic drugs, all of which block the dopamine D2 receptor to a greater or lesser extent, are the mainstay for the pharmacological treatment of schizophrenia. Engaging in a deeper understanding of how antipsychotics act on the brain and body, at the cellular, molecular and physiological level is vital to comprehend both the beneficial and potentially harmful actions of these medications and stimulate development of novel therapeutics. To address this, we review recent advances in our understanding of neuroadaptations to antipsychotics, focusing on (1) treatment efficacy, (2) impact on brain volume and (3) evidence from human post-mortem studies that attempt to dissect neuropathological effects of antipsychotic drugs from organic schizophrenia neurobiology and (4) cardio-metabolic side effects...
October 15, 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27747724/citalopram-induced-long-qt-syndrome-and-the-mammalian-dive-reflex
#5
Frank F Vincenzi, Philippe Lunetta
While SCUBA diving, a 44-year-old Caucasian patient had an abnormal cardiac rhythm, presumably Torsade de Pointes (TdP), during the initial descent to depth. Upon surfacing, she developed ventricular fibrillation and died. The patient had been treated for mild depression for nearly a year with citalopram 60 mg per day, a drug known to cause prolonged QT interval. She had also been treated with two potentially hepatotoxic drugs. Liver impairment causes selective loss of cytochrome P450 (CYP) 2C19 activity, the major pathway for metabolism of citalopram...
December 2015: Drug Safety—Case Reports
https://www.readbyqxmd.com/read/27715341/modulation-of-glp-1-signaling-as-a-novel-therapeutic-approach-in-the-treatment-of-alzheimer-s-disease-pathology
#6
Antonella Tramutola, Andrea Arena, Chiara Cini, D Allan Butterfield, Eugenio Barone
Clinical studies suggest a link between peripheral insulin resistance and cognitive dysfunction. Post-mortem analyses of Alzheimer disease (AD) subjects revealed insulin resistance in the brain, suggesting a role of this condition in cognitive deficits observed in AD. In this review, we focus on the glucagon-like peptide-1 (GLP-1) signaling pathway, whose role in the brain is collecting increasing attention because of its association with insulin signaling activation. Areas covered: The role of GLP-1-mediated effects in the brain and how they are affected along the progression of AD pathology is discussed...
October 7, 2016: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/27701408/enhanced-sensitivity-to-drugs-of-abuse-and-palatable-foods-following-maternal-overnutrition
#7
D Peleg-Raibstein, G Sarker, K Litwan, S D Krämer, S M Ametamey, R Schibli, C Wolfrum
Epidemiological studies have shown an association between maternal overnutrition and increased risk of the progeny for the development of obesity as well as psychiatric disorders. Animal studies have shown results regarding maternal high-fat diet (HFD) and a greater risk of the offspring to develop obesity. However, it still remains unknown whether maternal HFD can program the central reward system in such a way that it will imprint long-term changes that will predispose the offspring to addictive-like behaviors that may lead to obesity...
October 4, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27684727/a-rat-carotid-balloon-injury-model-to-test-anti-vascular-remodeling-therapeutics
#8
Natalia Petrasheskaya, Hyun-Jin Tae, Ismayil Ahmet, Mark I Talan, Edward G Lakatta, Li Lin
The rat carotid balloon injury is a well-established surgical model that has been used to study arterial remodeling and vascular cell proliferation. It is also a valuable model system to test, and to evaluate therapeutics and drugs that negate maladaptive remodeling in the vessel. The injury, or barotrauma, in the vessel lumen caused by an inflated balloon via an inserted catheter induces subsequent neointimal growth, often leading to hyperplasia or thickening of the vessel wall that narrows, or obstructs the lumen...
2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27681340/determination-of-drugs-of-abuse-in-a-single-sample-of-human-teeth-by-a-gas-chromatography-mass-spectrometry-method
#9
Giovanni Ottaviani, Roberto Cameriere, Marta Cippitelli, Rino Froldi, Giovanna Tassoni, Massimiliano Zampi, Mariano Cingolani
The purpose of this study was to develop and validate a gas chromatography-mass spectrometry method to detect drugs of abuse in a single sample of tooth. Pulverized samples of dental materials were subjected to acid hydrolysis to detect opiates, cocaine and their metabolites. The residual dental materials from these analyses were subjected to basic extraction to detect cannabis products (Δ(9)-tetrahydrocannabinol, cannabidiol and cannabinol). The method showed a good linearity between 0.05 and 2 ng/mg for all substances...
September 27, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27630300/evaluating-the-effect-of-micropump%C3%A2-position-internal-pressure-and-doxorubicin-dosage-on-efficacy-of-pressurized-intra-peritoneal-aerosol-chemotherapy-pipac-in-an-ex-vivo-model
#10
Veria Khosrawipour, Tanja Khosrawipour, Thomas Albert Falkenstein, David Diaz-Carballo, Eckart Förster, Aras Osma, Irenäus Anton Adamietz, Jürgen Zieren, Khashayar Fakhrian
BACKGROUND/AIM: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a novel clinical approach to the treatment of peritoneal carcinomatosis. A well-established, not anatomic ex vivo PIPAC model was used to investigate the influence of changes in internal pressure, distance of the Micropump(©) (MIP) to the distributing surface and the drug concentration on the penetration depth of doxorubicin in the target tissue. MATERIALS AND METHODS: Doxorubicin was aerosolized in an ex vivo PIPAC model using a hermetic container system mimicking the abdominal cavity...
September 2016: Anticancer Research
https://www.readbyqxmd.com/read/27597253/concurrent-estimation-of-metabolite-concentrations-along-with-parent-drug-quantification-in-post-mortem-blood
#11
Jenni Viinamäki, Ilkka Ojanperä
There is a constant demand for the quantification of drug metabolites within post-mortem toxicology. Especially electrospray ionization-mass spectrometry techniques necessitate that calibration is carried out using primary reference standards due to the non-uniform ionization efficiency between parent drugs and their metabolites. As reference standards for metabolites are not readily available and their costs are high, alternative methods for immediate quantification are required. In this study, ultra-high performance liquid chromatography coupled with photodiode array detection and corona charged aerosol detection was utilized for the concurrent quantification of 23 drug metabolites using the corresponding parent drug for calibration...
October 2016: Forensic Science International
https://www.readbyqxmd.com/read/27591717/post-mortem-concentrations-of-drugs-determined-in-femoral-blood-in-single-drug-fatalities-compared-with-multi-drug-poisoning-deaths
#12
Alan Wayne Jones, Anita Holmgren, Johan Ahlner
BACKGROUND: Reference concentrations of drugs in post-mortem femoral blood furnishes useful information when poisoning (intoxication) deaths are investigated. However, few publications compare the concentrations of drugs in single-drug fatalities with multi-drug intoxications. This article attempts to fill this gap in knowledge. METHODS: We searched a national forensic toxicology database (TOXBASE) and found N=13,963 deaths attributed by pathologists to intoxication by drugs (poisoning)...
October 2016: Forensic Science International
https://www.readbyqxmd.com/read/27526264/-molecular-genetics-and-determination-of-time-since-death-short-communication
#13
Markéta Šaňková, Michaela Račanská
Estimation of time since death, i.e. the post-mortem interval (PMI), is one of the most problematic issues in forensic practice. Accurate determination of the PMI still remains very complicated task even for an experienced forensic pathologist.Physical changes including algor, livor and rigor mortis can be observed already during the first hours after death of an individual. Unfortunately, the estimation of PMI on the basis of these changes is often burdened with a certain degree of inaccuracy, which is caused by the temperature of surrounding environment, constitution of the body, cause of the death, location of the body, drug abuse etc...
2016: Soudní Lékarství
https://www.readbyqxmd.com/read/27516217/chronic-exposure-to-haloperidol-and-olanzapine-leads-to-common-and-divergent-shape-changes-in-the-rat-hippocampus-in-the-absence-of-grey-matter-volume-loss
#14
W R Crum, F Danckaers, T Huysmans, M-C Cotel, S Natesan, M M Modo, J Sijbers, S C R Williams, S Kapur, A C Vernon
BACKGROUND: One of the most consistently reported brain abnormalities in schizophrenia (SCZ) is decreased volume and shape deformation of the hippocampus. However, the potential contribution of chronic antipsychotic medication exposure to these phenomena remains unclear. METHOD: We examined the effect of chronic exposure (8 weeks) to clinically relevant doses of either haloperidol (HAL) or olanzapine (OLZ) on adult rat hippocampal volume and shape using ex vivo structural MRI with the brain retained inside the cranium to prevent distortions due to dissection, followed by tensor-based morphometry (TBM) and elastic surface-based shape deformation analysis...
November 2016: Psychological Medicine
https://www.readbyqxmd.com/read/27490334/a-novel-screening-method-for-64-new-psychoactive-substances-and-5-amphetamines-in-blood-by-lc-ms-ms-and-application-to-real-cases
#15
Fabio Vaiano, Francesco P Busardò, Diego Palumbo, Chrystalla Kyriakou, Alessia Fioravanti, Valeria Catalani, Francesco Mari, Elisabetta Bertol
Identification and quantification of new psychoactive substances (NPS), both in biological and non-biological samples, represent a hard challenge for forensic toxicologists. NPS are increasingly emerging on illegal drug market. Many cases of co-consumption of NPS and other substances have also been reported. Hence, the development of analytical methods aiming at the detection of a broad-spectrum of compounds (NPS and "traditional" drugs) could be helpful. In this paper, a fully validated screening method in blood for the simultaneous detection of 69 substances, including 64 NPS (28 synthetic cannabinoids, 19 synthetic cathinones, 5 phenethylamines, 3 indanes, 2 piperazines, 2 tryptamines, 2 phencyclidine, methoxetamine, ketamine and its metabolite) and 5 amphetamines (amphetamine, methamphetamine, MDMA, MDA, 3,4-methylenedioxy-N-ethylamphetamine - MDEA-) by a dynamic multiple reaction monitoring analysis through liquid chromatography - tandem mass spectrometry (LC-MS/MS) is described...
September 10, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/27488829/development-and-validation-of-a-method-for-alcohol-analysis-in-brain-tissue-by-headspace-gas-chromatography-with-flame-ionization-detector
#16
Hao-Jung Chun, Justin L Poklis, Alphonse Poklis, Carl E Wolf
Ethanol is the most widely used and abused drug. While blood is the preferred specimen for analysis, tissue specimens such as brain serve as alternative specimens for alcohol analysis in post-mortem cases where blood is unavailable or contaminated. A method was developed using headspace gas chromatography with flame ionization detection (HS-GC-FID) for the detection and quantification of ethanol, acetone, isopropanol, methanol and n-propanol in brain tissue specimens. Unfixed volatile-free brain tissue specimens were obtained from the Department of Pathology at Virginia Commonwealth University...
October 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27471990/ocfentanil-overdose-fatality-in-the-recreational-drug-scene
#17
Vera Coopman, Jan Cordonnier, Marc De Leeuw, Vincent Cirimele
This paper describes the first reported death involving ocfentanil, a potent synthetic opioid and structure analogue of fentanyl abused as a new psychoactive substance in the recreational drug scene. A 17-year-old man with a history of illegal substance abuse was found dead in his home after snorting a brown powder purchased over the internet with bitcoins. Acetaminophen, caffeine and ocfentanil were identified in the powder by gas chromatography mass spectrometry and reversed-phase liquid chromatography with diode array detector...
September 2016: Forensic Science International
https://www.readbyqxmd.com/read/27468043/clinical-management-of-bilateral-cutaneous-squamous-cell-carcinoma-of-the-hind-feet-pads-in-a-southern-white-rhinoceros-ceratotherium-simum-simum
#18
Eva Maria Greunz, Marie Simon, Karin Lemberger, Gabriela Galateanu, Robert Hermes, Antoine Leclerc
The current report describes the temporary regression, due to intensive symptomatic treatment, of ulcerative skin lesions caused by squamous cell carcinoma in a white rhinoceros. A captive, 40-yr-old southern white rhinoceros (Ceratotherium simum simum) developed profound, ulcerative skin lesions on the pads of both hind feet. At the peak of the disease, at least one quarter of the pads was affected. A diagnosis of squamous cell carcinoma was made via biopsy. Treatment included anti-inflammatory drugs, antibiotics, and local care...
June 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/27461439/polonium-210-poisoning-a-first-hand-account
#19
Amit C Nathwani, James F Down, John Goldstone, James Yassin, Paul I Dargan, Andres Virchis, Nick Gent, David Lloyd, John D Harrison
BACKGROUND: Polonium-210 ((210)Po) gained widespread notoriety after the poisoning and subsequent death of Mr Alexander Litvinenko in London, UK, in 2006. Exposure to (210)Po resulted initially in a clinical course that was indistinguishable from infection or exposure to chemical toxins, such as thallium. METHODS: A 43-year-old man presented to his local hospital with acute abdominal pain, diarrhoea, and vomiting, and was admitted to the hospital because of dehydration and persistent gastrointestinal symptoms...
September 10, 2016: Lancet
https://www.readbyqxmd.com/read/27405362/fatal-combination-with-3-methylmethcathinone-3-mmc-and-gamma-hydroxybutyric-acid-ghb
#20
Carole Jamey, Pascal Kintz, Laurent Martrille, Jean-Sébastien Raul
We reported the case of 69-year-old man who was discovered dead at a friend's home. 3-Methylmethcathinone (3-MMC) and poppers (alkyl nitrites) were found at the scene by the police. Autopsy specimens including peripheral and cardiac blood, urine, gastric content, bile and hair were sent to our laboratory to document a possible death involving abuse of drugs. Routine toxicological analysis was performed with gas chromatography with flame ionization detection (GC-FID), high performance liquid chromatography-diode array detection (HPLC-DAD), headspace gas chromatography-mass spectrometry (HS-GC-MS), gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS)-MS...
September 2016: Journal of Analytical Toxicology
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